/**
 * IM 树组件--根据LAYUI-TREE 更改 
 */

layui.define('form', function (exports) {
  "use strict";

  var $ = layui.$
    , form = layui.form
    , layer = layui.layer

    //模块名
    , MOD_NAME = 'imtree'

    //外部接口
    , imtree = {
      config: {}
      , index: layui[MOD_NAME] ? (layui[MOD_NAME].index + 10000) : 0

      //设置全局项
      , set: function (options) {
        var that = this;
        that.config = $.extend({}, that.config, options);
        return that;
      }

      //事件
      , on: function (events, callback) {
        return layui.onevent.call(this, MOD_NAME, events, callback);
      }
    }

    //操作当前实例
    , thisModule = function () {
      var that = this
        , options = that.config
        , id = options.id || that.index;

      thisModule.that[id] = that; //记录当前实例对象
      thisModule.config[id] = options; //记录当前实例配置项

      return {
        config: options
        //重置实例
        , reload: function (options) {
          that.reload.call(that, options);
        }
        , getChecked: function () {
          return that.getChecked.call(that);
        }
        , setChecked: function (id) {//设置值
          return that.setChecked.call(that, id);
        }
      }
    }

    //获取当前实例配置项
    , getThisModuleConfig = function (id) {
      var config = thisModule.config[id];
      if (!config) hint.error('The ID option was not found in the ' + MOD_NAME + ' instance');
      return config || null;
    }

    //字符常量
    , SHOW = 'layui-show', HIDE = 'layui-hide', NONE = 'layui-none', DISABLED = 'layui-disabled'

    , ELEM_VIEW = 'layui-imtree', ELEM_SET = 'layui-imtree-set', ICON_CLICK = 'layui-imtree-iconClick'
    , ICON_ADD = 'layui-icon-addition', ICON_SUB = 'layui-icon-subtraction', ELEM_ENTRY = 'layui-imtree-entry', ELEM_MAIN = 'layui-imtree-main', ELEM_TEXT = 'layui-imtree-txt', ELEM_PACK = 'layui-imtree-pack', ELEM_SPREAD = 'layui-imtree-spread'
    , ELEM_LINE_SHORT = 'layui-imtree-setLineShort', ELEM_SHOW = 'layui-imtree-showLine', ELEM_EXTEND = 'layui-imtree-lineExtend'

    //构造器
    , Class = function (options) {
      var that = this;
      that.index = ++imtree.index;
      that.config = $.extend({}, that.config, imtree.config, options);
      that.render();
    };

  //默认配置
  Class.prototype.config = {
    data: []  //数据    
    , showCheckbox: false  //是否显示复选框
    , showLine: true  //是否开启连接线
    , accordion: false  //是否开启手风琴模式
    , onlyIconControl: false  //是否仅允许节点左侧图标控制展开收缩
    , isJump: false  //是否允许点击节点时弹出新窗口跳转
    , edit: false  //是否开启节点的操作图标
    , isIM: true  //是否为IM树型，大图标头像
    , text: {
      defaultNodeName: '未命名' //节点默认名称
      , none: '无数据'  //数据为空时的文本提示
    },
    avatar: '/static/img/default.png'
  };

  //重载实例
  Class.prototype.reload = function (options) {
    var that = this;

    layui.each(options, function (key, item) {
      if (layui.type(item) === 'array') delete that.config[key];
    });

    that.config = $.extend(true, {}, that.config, options);
    that.render();
  };

  //主体渲染
  Class.prototype.render = function () {
    var that = this
      , options = that.config;

    that.checkids = [];

    var temp = $('<div class="layui-imtree' + (options.showCheckbox ? " layui-form" : "") + (options.showLine ? " layui-imtree-line" : "") + '" lay-filter="LAY-imtree-' + that.index + '"></div>');
    that.imtree(temp);

    var othis = options.elem = $(options.elem);
    if (!othis[0]) return;

    //索引
    that.key = options.id || that.index;

    //插入组件结构
    that.elem = temp;
    that.elemNone = $('<div class="layui-imtree-emptyText">' + options.text.none + '</div>');
    othis.html(that.elem);

    if (that.elem.find('.layui-imtree-set').length == 0) {
      return that.elem.append(that.elemNone);
    };

    //复选框渲染
    if (options.showCheckbox) {
      that.renderForm('checkbox');
    };

    that.elem.find('.layui-imtree-set').each(function () {
      var othis = $(this);
      //最外层
      if (!othis.parent('.layui-imtree-pack')[0]) {
        othis.addClass('layui-imtree-setHide');
      };

      //没有下一个节点 上一层父级有延伸线
      if (!othis.next()[0] && othis.parents('.layui-imtree-pack').eq(1).hasClass('layui-imtree-lineExtend')) {
        othis.addClass(ELEM_LINE_SHORT);
      };

      //没有下一个节点 外层最后一个
      if (!othis.next()[0] && !othis.parents('.layui-imtree-set').eq(0).next()[0]) {
        othis.addClass(ELEM_LINE_SHORT);
      };
    });

    that.events();
  };

  //渲染表单
  Class.prototype.renderForm = function (type) {
    form.render(type, 'LAY-imtree-' + this.index);
  };

  //节点解析
  Class.prototype.imtree = function (elem, children) {
    var that = this
      , options = that.config
      , data = children || options.data;

    //遍历数据
    layui.each(data, function (index, item) {
      var hasChild = item.children && item.children.length > 0
        , packDiv = $('<div class="layui-imtree-pack" ' + (item.spread ? 'style="display: block;"' : '') + '></div>')
        , entryDiv = $(['<div data-id="' + item.id + '" class="layui-imtree-set' + (item.spread ? " layui-imtree-spread" : "") + (item.checked ? " layui-imtree-checkedFirst" : "") + '">'
          , '<div class="layui-imtree-entry">'
          , '<div class="layui-imtree-main">'
          //箭头
          , function () {
            if (options.showLine) {
              if (hasChild) {
                return '<span class="layui-imtree-iconClick layui-imtree-icon"><i class="layui-icon ' + (item.spread ? "layui-icon-subtraction" : "layui-icon-addition") + '"></i></span>';
              } else {
                return '<span class="layui-imtree-iconClick"><i class="layui-icon layui-icon-file"></i></span>';
              };
            } else {
              if (options.isIM && !hasChild) {
                return '';
              } else {
                return '<span class="layui-imtree-iconClick"><i class="layui-imtree-iconArrow ' + (hasChild ? "" : HIDE) + '"></i></span>';
              }
            };
          }()

          //复选框
          , function () {
            return options.showCheckbox ? '<input type="checkbox" name="' + (item.field || ('layuiImTreeCheck_' + item.id)) + '" same="layuiImTreeCheck" lay-skin="primary" ' + (item.disabled ? "disabled" : "") + ' value="' + item.id + '">' : '';
          }()

          //节点
          , function () {
            if (options.isIM && !hasChild) {
              return '<span class="' + ELEM_TEXT + (item.disabled ? ' ' + DISABLED : '') + ' ">' + '<img src="' + (item.avatar || options.avatar) + '" class="layui-imtree-avatar" alt=""/>&nbsp;&nbsp;' + (item.title || item.name  || item.label || options.text.defaultNodeName) + '</span>';
            } else {
              if (options.isJump && item.href) {
                return '<a href="' + item.href + '" target="_blank" class="' + ELEM_TEXT + '">' + (item.title || item.name  || item.label || options.text.defaultNodeName) + '</a>';
              } else {
                return '<span class="' + ELEM_TEXT + (item.disabled ? ' ' + DISABLED : '') + '">' + (item.title || item.name  || item.label || options.text.defaultNodeName) + '</span>';
              }
            }
          }()
          , '</div>'

          //节点操作图标
          , function () {
            if (!options.edit) return '';

            var editIcon = {
              add: '<i class="layui-icon layui-icon-add-1"  data-type="add"></i>'
              , update: '<i class="layui-icon layui-icon-edit" data-type="update"></i>'
              , del: '<i class="layui-icon layui-icon-delete" data-type="del"></i>'
            }, arr = ['<div class="layui-btn-group layui-imtree-btnGroup">'];

            if (options.edit === true) {
              options.edit = ['update', 'del']
            }

            if (typeof options.edit === 'object') {
              layui.each(options.edit, function (i, val) {
                arr.push(editIcon[val] || '')
              });
              return arr.join('') + '</div>';
            }
          }()
          , '</div></div>'].join(''));

      //如果有子节点，则递归继续生成树
      if (hasChild) {
        entryDiv.append(packDiv);
        that.imtree(packDiv, item.children);
      };

      elem.append(entryDiv);

      //若有前置节点，前置节点加连接线
      if (entryDiv.prev('.' + ELEM_SET)[0]) {
        entryDiv.prev().children('.layui-imtree-pack').addClass('layui-imtree-showLine');
      };

      //若无子节点，则父节点加延伸线
      if (!hasChild) {
        entryDiv.parent('.layui-imtree-pack').addClass('layui-imtree-lineExtend');
      };

      //展开节点操作
      that.spread(entryDiv, item);

      //选择框
      if (options.showCheckbox) {
        item.checked && that.checkids.push(item.id);
        that.checkClick(entryDiv, item);
      }

      //操作节点
      options.edit && that.operate(entryDiv, item);

    });
  };

  //展开节点
  Class.prototype.spread = function (elem, item) {
    var that = this
      , options = that.config
      , entry = elem.children('.' + ELEM_ENTRY)
      , elemMain = entry.children('.' + ELEM_MAIN)
      , elemIcon = entry.find('.' + ICON_CLICK)
      , elemText = entry.find('.' + ELEM_TEXT)
      , touchOpen = options.onlyIconControl ? elemIcon : elemMain //判断展开通过节点还是箭头图标
      , state = '';

    //展开收缩
    touchOpen.on('click', function (e) {
      var packCont = elem.children('.' + ELEM_PACK)
        , iconClick = touchOpen.children('.layui-icon')[0] ? touchOpen.children('.layui-icon') : touchOpen.find('.layui-imtree-icon').children('.layui-icon');

      //若没有子节点
      if (!packCont[0]) {
        state = 'normal';
      } else {
        if (elem.hasClass(ELEM_SPREAD)) {
          elem.removeClass(ELEM_SPREAD);
          packCont.slideUp(200);
          iconClick.removeClass(ICON_SUB).addClass(ICON_ADD);
        } else {
          elem.addClass(ELEM_SPREAD);
          packCont.slideDown(200);
          iconClick.addClass(ICON_SUB).removeClass(ICON_ADD);

          //是否手风琴
          if (options.accordion) {
            var sibls = elem.siblings('.' + ELEM_SET);
            sibls.removeClass(ELEM_SPREAD);
            sibls.children('.' + ELEM_PACK).slideUp(200);
            sibls.find('.layui-imtree-icon').children('.layui-icon').removeClass(ICON_SUB).addClass(ICON_ADD);
          };
        };
      };
    });

    //点击回调
    elemText.on('click', function () {
      var othis = $(this);

      //判断是否禁用状态
      if (othis.hasClass(DISABLED)) return;

      //判断展开收缩状态
      if (elem.hasClass(ELEM_SPREAD)) {
        state = options.onlyIconControl ? 'open' : 'close';
      } else {
        state = options.onlyIconControl ? 'close' : 'open';
      }

      //点击产生的回调
      options.click && options.click({
        elem: elem
        , state: state
        , data: item
      });
    });
  };

  //计算复选框选中状态
  Class.prototype.setCheckbox = function (elem, item, elemCheckbox) {
    var that = this
      , options = that.config
      , checked = elemCheckbox.prop('checked');

    if (elemCheckbox.prop('disabled')) return;

    //同步子节点选中状态
    if (typeof item.children === 'object' || elem.find('.' + ELEM_PACK)[0]) {
      var childs = elem.find('.' + ELEM_PACK).find('input[same="layuiImTreeCheck"]');
      childs.each(function () {
        if (this.disabled) return; //不可点击则跳过
        this.checked = checked;
      });
    };

    //同步父节点选中状态
    var setParentsChecked = function (thisNodeElem) {
      //若无父节点，则终止递归
      if (!thisNodeElem.parents('.' + ELEM_SET)[0]) return;

      var state
        , parentPack = thisNodeElem.parent('.' + ELEM_PACK)
        , parentNodeElem = parentPack.parent()
        , parentCheckbox = parentPack.prev().find('input[same="layuiImTreeCheck"]');

      //如果子节点有任意一条选中，则父节点为选中状态
      if (checked) {
        parentCheckbox.prop('checked', checked);
      } else { //如果当前节点取消选中，则根据计算“兄弟和子孙”节点选中状态，来同步父节点选中状态
        parentPack.find('input[same="layuiImTreeCheck"]').each(function () {
          if (this.checked) {
            state = true;
          }
        });

        //如果兄弟子孙节点全部未选中，则父节点也应为非选中状态
        state || parentCheckbox.prop('checked', false);
      }

      //向父节点递归
      setParentsChecked(parentNodeElem);
    };

    setParentsChecked(elem);

    that.renderForm('checkbox');
  };

  //复选框选择
  Class.prototype.checkClick = function (elem, item) {
    var that = this
      , options = that.config
      , entry = elem.children('.' + ELEM_ENTRY)
      , elemMain = entry.children('.' + ELEM_MAIN);



    //点击复选框
    elemMain.on('click', 'input[same="layuiImTreeCheck"]+', function (e) {
      layui.stope(e); //阻止点击节点事件

      var elemCheckbox = $(this).prev()
        , checked = elemCheckbox.prop('checked');

      if (elemCheckbox.prop('disabled')) return;

      that.setCheckbox(elem, item, elemCheckbox);

      //复选框点击产生的回调
      options.oncheck && options.oncheck({
        elem: elem
        , checked: checked
        , data: item
      });
    });
  };

  //节点操作
  Class.prototype.operate = function (elem, item) {
    var that = this
      , options = that.config
      , entry = elem.children('.' + ELEM_ENTRY)
      , elemMain = entry.children('.' + ELEM_MAIN);

    entry.children('.layui-imtree-btnGroup').on('click', '.layui-icon', function (e) {
      layui.stope(e);  //阻止节点操作

      var type = $(this).data("type")
        , packCont = elem.children('.' + ELEM_PACK)
        , returnObj = {
          data: item
          , type: type
          , elem: elem
        };
      //增加
      if (type == 'add') {
        //若节点本身无子节点
        if (!packCont[0]) {
          //若开启连接线，更改图标样式
          if (options.showLine) {
            elemMain.find('.' + ICON_CLICK).addClass('layui-imtree-icon');
            elemMain.find('.' + ICON_CLICK).children('.layui-icon').addClass(ICON_ADD).removeClass('layui-icon-file');
            //若未开启连接线，显示箭头
          } else {
            elemMain.find('.layui-imtree-iconArrow').removeClass(HIDE);
          };
          //节点添加子节点容器
          elem.append('<div class="layui-imtree-pack"></div>');
        };

        //新增节点
        var key = options.operate && options.operate(returnObj)
          , obj = {};
        obj.title = options.text.defaultNodeName;
        obj.id = key;
        that.imtree(elem.children('.' + ELEM_PACK), [obj]);

        //放在新增后面，因为要对元素进行操作
        if (options.showLine) {
          //节点本身无子节点
          if (!packCont[0]) {
            //遍历兄弟节点，判断兄弟节点是否有子节点
            var siblings = elem.siblings('.' + ELEM_SET), num = 1
              , parentPack = elem.parent('.' + ELEM_PACK);
            layui.each(siblings, function (index, i) {
              if (!$(i).children('.' + ELEM_PACK)[0]) {
                num = 0;
              };
            });

            //若兄弟节点都有子节点
            if (num == 1) {
              //兄弟节点添加连接线
              siblings.children('.' + ELEM_PACK).addClass(ELEM_SHOW);
              siblings.children('.' + ELEM_PACK).children('.' + ELEM_SET).removeClass(ELEM_LINE_SHORT);
              elem.children('.' + ELEM_PACK).addClass(ELEM_SHOW);
              //父级移除延伸线
              parentPack.removeClass(ELEM_EXTEND);
              //同层节点最后一个更改线的状态
              parentPack.children('.' + ELEM_SET).last().children('.' + ELEM_PACK).children('.' + ELEM_SET).last().addClass(ELEM_LINE_SHORT);
            } else {
              elem.children('.' + ELEM_PACK).children('.' + ELEM_SET).addClass(ELEM_LINE_SHORT);
            };
          } else {
            //添加延伸线
            if (!packCont.hasClass(ELEM_EXTEND)) {
              packCont.addClass(ELEM_EXTEND);
            };
            //子节点添加延伸线
            elem.find('.' + ELEM_PACK).each(function () {
              $(this).children('.' + ELEM_SET).last().addClass(ELEM_LINE_SHORT);
            });
            //如果前一个节点有延伸线
            if (packCont.children('.' + ELEM_SET).last().prev().hasClass(ELEM_LINE_SHORT)) {
              packCont.children('.' + ELEM_SET).last().prev().removeClass(ELEM_LINE_SHORT);
            } else {
              //若之前的没有，说明处于连接状态
              packCont.children('.' + ELEM_SET).last().removeClass(ELEM_LINE_SHORT);
            };
            //若是最外层，要始终保持相连的状态
            if (!elem.parent('.' + ELEM_PACK)[0] && elem.next()[0]) {
              packCont.children('.' + ELEM_SET).last().removeClass(ELEM_LINE_SHORT);
            };
          };
        };
        if (!options.showCheckbox) return;
        //若开启复选框，同步新增节点状态
        if (elemMain.find('input[same="layuiImTreeCheck"]')[0].checked) {
          var packLast = elem.children('.' + ELEM_PACK).children('.' + ELEM_SET).last();
          packLast.find('input[same="layuiImTreeCheck"]')[0].checked = true;
        };
        that.renderForm('checkbox');

        //修改
      } else if (type == 'update') {
        var text = elemMain.children('.' + ELEM_TEXT).html();
        elemMain.children('.' + ELEM_TEXT).html('');
        //添加输入框，覆盖在文字上方
        elemMain.append('<input type="text" class="layui-imtree-editInput">');
        //获取焦点
        elemMain.children('.layui-imtree-editInput').val(text).focus();
        //嵌入文字移除输入框
        var getVal = function (input) {
          var textNew = input.val().trim();
          textNew = textNew ? textNew : options.text.defaultNodeName;
          input.remove();
          elemMain.children('.' + ELEM_TEXT).html(textNew);

          //同步数据
          returnObj.data.title = textNew;

          //节点修改的回调
          options.operate && options.operate(returnObj);
        };
        //失去焦点
        elemMain.children('.layui-imtree-editInput').blur(function () {
          getVal($(this));
        });
        //回车
        elemMain.children('.layui-imtree-editInput').on('keydown', function (e) {
          if (e.keyCode === 13) {
            e.preventDefault();
            getVal($(this));
          };
        });

        //删除
      } else {
        layer.confirm('确认删除该节点 "<span style="color: #999;">' + (item.title || item.name || '') + '</span>" 吗？', function (index) {
          options.operate && options.operate(returnObj); //节点删除的回调
          returnObj.status = 'remove'; //标注节点删除

          layer.close(index);

          //若删除最后一个，显示空数据提示
          if (!elem.prev('.' + ELEM_SET)[0] && !elem.next('.' + ELEM_SET)[0] && !elem.parent('.' + ELEM_PACK)[0]) {
            elem.remove();
            that.elem.append(that.elemNone);
            return;
          };
          //若有兄弟节点
          if (elem.siblings('.' + ELEM_SET).children('.' + ELEM_ENTRY)[0]) {
            //若开启复选框
            if (options.showCheckbox) {
              //若开启复选框，进行下步操作
              var elemDel = function (elem) {
                //若无父结点，则不执行
                if (!elem.parents('.' + ELEM_SET)[0]) return;
                var siblingImTree = elem.siblings('.' + ELEM_SET).children('.' + ELEM_ENTRY)
                  , parentImTree = elem.parent('.' + ELEM_PACK).prev()
                  , checkState = parentImTree.find('input[same="layuiImTreeCheck"]')[0]
                  , state = 1, num = 0;
                //若父节点未勾选
                if (checkState.checked == false) {
                  //遍历兄弟节点
                  siblingImTree.each(function (i, item1) {
                    var input = $(item1).find('input[same="layuiImTreeCheck"]')[0]
                    if (input.checked == false && !input.disabled) {
                      state = 0;
                    };
                    //判断是否全为不可勾选框
                    if (!input.disabled) {
                      num = 1;
                    };
                  });
                  //若有可勾选选择框并且已勾选
                  if (state == 1 && num == 1) {
                    //勾选父节点
                    checkState.checked = true;
                    that.renderForm('checkbox');
                    //向上遍历祖先节点
                    elemDel(parentImTree.parent('.' + ELEM_SET));
                  };
                };
              };
              elemDel(elem);
            };
            //若开启连接线
            if (options.showLine) {
              //遍历兄弟节点，判断兄弟节点是否有子节点
              var siblings = elem.siblings('.' + ELEM_SET), num = 1
                , parentPack = elem.parent('.' + ELEM_PACK);
              layui.each(siblings, function (index, i) {
                if (!$(i).children('.' + ELEM_PACK)[0]) {
                  num = 0;
                };
              });
              //若兄弟节点都有子节点
              if (num == 1) {
                //若节点本身无子节点
                if (!packCont[0]) {
                  //父级去除延伸线，因为此时子节点里没有空节点
                  parentPack.removeClass(ELEM_EXTEND);
                  siblings.children('.' + ELEM_PACK).addClass(ELEM_SHOW);
                  siblings.children('.' + ELEM_PACK).children('.' + ELEM_SET).removeClass(ELEM_LINE_SHORT);
                };
                //若为最后一个节点
                if (!elem.next()[0]) {
                  elem.prev().children('.' + ELEM_PACK).children('.' + ELEM_SET).last().addClass(ELEM_LINE_SHORT);
                } else {
                  parentPack.children('.' + ELEM_SET).last().children('.' + ELEM_PACK).children('.' + ELEM_SET).last().addClass(ELEM_LINE_SHORT);
                };
                //若为最外层最后一个节点，去除前一个结点的连接线
                if (!elem.next()[0] && !elem.parents('.' + ELEM_SET)[1] && !elem.parents('.' + ELEM_SET).eq(0).next()[0]) {
                  elem.prev('.' + ELEM_SET).addClass(ELEM_LINE_SHORT);
                };
              } else {
                //若为最后一个节点且有延伸线
                if (!elem.next()[0] && elem.hasClass(ELEM_LINE_SHORT)) {
                  elem.prev().addClass(ELEM_LINE_SHORT);
                };
              };
            };

          } else {
            //若无兄弟节点
            var prevDiv = elem.parent('.' + ELEM_PACK).prev();
            //若开启了连接线
            if (options.showLine) {
              prevDiv.find('.' + ICON_CLICK).removeClass('layui-imtree-icon');
              prevDiv.find('.' + ICON_CLICK).children('.layui-icon').removeClass(ICON_SUB).addClass('layui-icon-file');
              //父节点所在层添加延伸线
              var pare = prevDiv.parents('.' + ELEM_PACK).eq(0);
              pare.addClass(ELEM_EXTEND);

              //兄弟节点最后子节点添加延伸线
              pare.children('.' + ELEM_SET).each(function () {
                $(this).children('.' + ELEM_PACK).children('.' + ELEM_SET).last().addClass(ELEM_LINE_SHORT);
              });
            } else {
              //父节点隐藏箭头
              prevDiv.find('.layui-imtree-iconArrow').addClass(HIDE);
            };
            //移除展开属性
            elem.parents('.' + ELEM_SET).eq(0).removeClass(ELEM_SPREAD);
            //移除节点容器
            elem.parent('.' + ELEM_PACK).remove();
          };

          elem.remove();
        });

      };
    });
  };

  //部分事件
  Class.prototype.events = function () {
    var that = this
      , options = that.config
      , checkWarp = that.elem.find('.layui-imtree-checkedFirst');

    //初始选中
    that.setChecked(that.checkids);

    //搜索
    that.elem.find('.layui-imtree-search').on('keyup', function () {
      var input = $(this)
        , val = input.val()
        , pack = input.nextAll()
        , arr = [];

      //遍历所有的值
      pack.find('.' + ELEM_TEXT).each(function () {
        var entry = $(this).parents('.' + ELEM_ENTRY);
        //若值匹配，加一个类以作标识
        if ($(this).html().indexOf(val) != -1) {
          arr.push($(this).parent());

          var select = function (div) {
            div.addClass('layui-imtree-searchShow');
            //向上父节点渲染
            if (div.parent('.' + ELEM_PACK)[0]) {
              select(div.parent('.' + ELEM_PACK).parent('.' + ELEM_SET));
            };
          };
          select(entry.parent('.' + ELEM_SET));
        };
      });

      //根据标志剔除
      pack.find('.' + ELEM_ENTRY).each(function () {
        var parent = $(this).parent('.' + ELEM_SET);
        if (!parent.hasClass('layui-imtree-searchShow')) {
          parent.addClass(HIDE);
        };
      });
      if (pack.find('.layui-imtree-searchShow').length == 0) {
        that.elem.append(that.elemNone);
      };

      //节点过滤的回调
      options.onsearch && options.onsearch({
        elem: arr
      });
    });

    //还原搜索初始状态
    that.elem.find('.layui-imtree-search').on('keydown', function () {
      $(this).nextAll().find('.' + ELEM_ENTRY).each(function () {
        var parent = $(this).parent('.' + ELEM_SET);
        parent.removeClass('layui-imtree-searchShow ' + HIDE);
      });
      if ($('.layui-imtree-emptyText')[0]) $('.layui-imtree-emptyText').remove();
    });
  };

  //得到选中节点
  Class.prototype.getChecked = function () {
    var that = this
      , options = that.config
      , checkId = []
      , checkData = [];

    //遍历节点找到选中索引
    that.elem.find('.layui-form-checked').each(function () {
      checkId.push($(this).prev()[0].value);
    });

    //遍历节点
    var eachNodes = function (data, checkNode) {
      layui.each(data, function (index, item) {
        layui.each(checkId, function (index2, item2) {
          if (item.id == item2) {
            var cloneItem = $.extend({}, item);
            delete cloneItem.children;

            checkNode.push(cloneItem);

            if (item.children) {
              cloneItem.children = [];
              eachNodes(item.children, cloneItem.children);
            }
            return true
          }
        });
      });
    };

    eachNodes($.extend({}, options.data), checkData);

    return checkData;
  };

  //设置选中节点
  Class.prototype.setChecked = function (checkedId) {
    var that = this
      , options = that.config;

    //初始选中
    that.elem.find('.' + ELEM_SET).each(function (i, item) {
      var thisId = $(this).data('id')
        , input = $(item).children('.' + ELEM_ENTRY).find('input[same="layuiImTreeCheck"]')
        , reInput = input.next();

      //若返回数字
      if (typeof checkedId === 'number') {
        if (thisId.toString() == checkedId.toString()) {
          if (!input[0].checked) {
            reInput.click();
          };
          return false;
        };
      }
      //若返回数组
      else if (typeof checkedId === 'object') {
        layui.each(checkedId, function (index, value) {
          if (value.toString() == thisId.toString() && !input[0].checked) {
            reInput.click();
            return true;
          }
        });
      };
    });
  };

  //记录所有实例
  thisModule.that = {}; //记录所有实例对象
  thisModule.config = {}; //记录所有实例配置项

  //重载实例
  imtree.reload = function (id, options) {
    var that = thisModule.that[id];
    that.reload(options);

    return thisModule.call(that);
  };

  //获得选中的节点数据
  imtree.getChecked = function (id) {
    var that = thisModule.that[id];
    return that.getChecked();
  };

  //设置选中节点
  imtree.setChecked = function (id, checkedId) {
    var that = thisModule.that[id];
    return that.setChecked(checkedId);
  };

  //核心入口
  imtree.render = function (options) {
    var inst = new Class(options);
    return thisModule.call(inst);
  };

  exports(MOD_NAME, imtree);
})